The Space Shuttle Challenger disaster was a tragic event in 1986 when the shuttle exploded shortly after launch, resulting in the loss of all seven crew members.
Space Shuttle Columbia disaster Explained
The Space Shuttle Columbia disaster was a tragic event in 2003 when the shuttle disintegrated upon re-entry, resulting in the loss of all seven crew members.
STS-107 Explained
STS-107 was the tragic space shuttle mission that ended in the disintegration of the Columbia orbiter upon re-entry, resulting in the loss of all seven crew members.
STS-51-L Explained
STS-51-L was the tragic space shuttle mission that ended in the Challenger disaster in 1986.